JP2004235042A - Gas discharge display device and method of manufacturing device - Google Patents

Gas discharge display device and method of manufacturing device Download PDF

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Publication number
JP2004235042A
JP2004235042A JP2003022862A JP2003022862A JP2004235042A JP 2004235042 A JP2004235042 A JP 2004235042A JP 2003022862 A JP2003022862 A JP 2003022862A JP 2003022862 A JP2003022862 A JP 2003022862A JP 2004235042 A JP2004235042 A JP 2004235042A
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Japan
Prior art keywords
thick film
flat plate
film
discharge
dielectric
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JP2003022862A
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Japanese (ja)
Inventor
Masayuki Hiroshima
Kazutoshi Ikesue
Shigeo Mori
Shinsuke Mori
Susumu Sakamoto
政幸 廣嶋
信輔 森
繁夫 森
和利 池末
進 阪本
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Noritake Co Ltd
株式会社ノリタケカンパニーリミテド
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Priority to JP2003022862A priority Critical patent/JP2004235042A/en
Publication of JP2004235042A publication Critical patent/JP2004235042A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00Gas-filled discharge tubes with alternating current induction of the discharge, e.g. AC-PDPs [Alternating Current Plasma Display Panels]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/16AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided inside or on the side face of the spacers

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas discharge display device and a method of manufacturing the device of 3-electrode AC type with a counter discharge structure. <P>SOLUTION: Each of a plurality of sustaining electrodes for generating sustaining discharge in a discharge space 22 is composed of two belt-like thick film conductors 52, 52 layered via an intermediate dielectric layer 42, however each of the sustaining electrodes is covered by a dielectric film 48 and a protective film 50, so that when a voltage is applied between the conductors 52, 52 adjoining each other, charges are successively formed all over the range in which the conductors 52, 52 are layered on the prospective film 50 in the thickness direction of a sheet member 20. Therefor, since discharge surfaces 56 are faced each other with an area corresponded to the layered range, a PDP 10 with the opposed discharge structure is obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an AC (alternating current) gas discharge display device and a method of manufacturing the same.
[0002]
[Prior art]
A plurality of discharge spaces formed along a direction between a first flat plate (front plate) having translucency and a second flat plate (rear plate) parallel to the first flat plate and filled with a predetermined gas. And a plurality of pairs of sustaining electrodes formed along the other direction orthogonal to the one direction and covered with the thick-film dielectric film to generate gas discharge in each of the plurality of discharge spaces; A plurality of write electrodes formed along the one direction to select a light emitting section by generating a gas discharge between the electrodes, and utilizing a gas discharge between the plurality of pairs of sustain electrodes. An AC-type gas discharge display device having a three-electrode structure, such as a plasma display panel (PDP), which displays a desired image such as a character, a symbol, or a figure by emitting light, is known. That. Such a gas discharge display device directly uses, for example, light emission of neon orange or the like accompanying generation of plasma generated by gas discharge, or a fluorescent material provided in a light emitting section (pixel or cell). An image is displayed using the light emission of the phosphor excited by the ultraviolet light generated by the light emitting device. For this reason, it is expected to be an image display device that replaces a CRT, because it is a flat plate type, which can easily be made larger, thinner, and lighter, and has a wide viewing angle and a fast response speed comparable to a CRT. (For example, see Non-Patent Document 1).
[0003]
[Non-patent document 1]
Tani Chizuka, "Advanced Display Technology," First Edition, First Edition, Kyoritsu Shuppan, December 28, 1998, p. 78-88
[0004]
[Problems to be solved by the invention]
By the way, in the display device having the three-electrode structure as described above, for example, the sustain electrode is provided on the front plate on the light emission side, and the write electrode is provided on the back plate side. Discharge between the sustain electrodes. Therefore, in such a surface discharge structure, since the distance between the discharge surfaces of the pair of sustain electrodes is significantly different between the inside and outside, the discharge is performed at the outside position in order to emit light from the entire light emitting section (pixel or cell). In addition to this, there is a problem that the discharge efficiency is reduced when the discharge is attempted, and the thick dielectric film is liable to be deteriorated due to the concentration of the discharge on the inner side where the discharge is likely to occur.
[0005]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a three-electrode AC type gas discharge display device having a facing discharge structure and a method of manufacturing the same.
[0006]
[First means for solving the problem]
In order to achieve such an object, the gist of the gas discharge display device of the first invention is to provide a gas discharge display device having a translucent first flat plate and a second flat plate parallel to the first flat plate. A plurality of formed discharge spaces, and a plurality of formed in the other direction orthogonal to one direction and covered with a thick film dielectric film to generate a gas discharge in each of the plurality of discharge spaces. A plurality of sustain electrodes, and a plurality of write electrodes formed along the one direction in order to select a light emitting section by generating a gas discharge between the sustain electrodes, and the plurality of sustain electrodes. A gas discharge apparatus of a type in which light generated by a gas discharge between sustain electrodes is observed through the first flat plate, wherein (a) a plurality of band-shaped thick film conductors laminated via a thick film dielectric layer That is, each of the plurality of sustain electrodes is configured.
[0007]
[Effect of the first invention]
In this way, each of the plurality of sustain electrodes is constituted by a plurality of band-shaped thick film conductors laminated via the thick film dielectric layer, and the sustain electrodes are covered with the thick film dielectric film. Therefore, when a voltage is applied between the sustain electrodes, charges are continuously formed on the thick dielectric film over the entire area where the strip-shaped thick film conductors are stacked in the thickness direction. . In other words, when an AC discharge is generated, the sustain electrode only functions substantially as an electrode lead, and the thick dielectric film covering it functions as a true electrode. The band-shaped thick film conductor functions equivalently to one conductor having a thickness dimension over the whole of the lamination area. Therefore, the discharge surfaces are opposed to each other with an area corresponding to the lamination range, so that a three-electrode AC type gas discharge display device having a facing discharge structure can be obtained.
[0008]
By the way, when a plurality of strip-shaped thick film conductors are arranged in parallel with each other to constitute a sustain electrode, if the conductor thickness is appropriately set, discharge is generated exclusively between the side surfaces, that is, between the opposed surfaces. Therefore, a facing discharge structure can be obtained. However, since it is extremely difficult to form a thick strip conductor with a certain width, it is difficult to form a thick discharge strip when the thick strip conductor is thickened to form a sufficiently large discharge surface. Has an uneven shape. For this reason, a flat discharge surface cannot be obtained even if the side surface of this uneven shape is covered with a thick-film dielectric film.Therefore, simply increasing the thickness of the band-shaped thick-film conductor has a function that satisfies a gas discharge display device. No opposing discharge electrode was obtained.
[0009]
[Other aspects of the first invention]
Here, preferably, the thick-film dielectric layer is a lattice-like dielectric layer interconnected at a plurality of locations in the longitudinal direction between the plurality of storage electrodes, and the gas discharge display device includes: A sheet comprising the plurality of strip-shaped thick film conductors laminated on the lattice-shaped dielectric layer covered with the thick film dielectric film and arranged between the first flat plate and the second flat plate in parallel with the first flat plate and the second flat plate It includes members. With this configuration, a plurality of sustain electrodes are formed by a plurality of strip-shaped thick film conductors laminated via a thick film dielectric layer in a lattice-like sheet member. Therefore, since the sustain electrodes are provided only by disposing the sheet member between the first substrate and the second substrate, heat treatment for forming the sustain electrodes on the inner surface is not performed on the first flat plate. In addition, since electrodes, dielectrics, and the like are not formed on the inner surface of the first flat plate on the light emission side, the process of forming the electrodes and the like may be complicated in order to increase the transparency of the first flat plate as much as possible. Absent. Therefore, it is possible to obtain an AC-type gas discharge display device having a three-electrode structure in which the manufacturing process is simple and distortion or the like due to heat treatment accompanying the formation of the electrodes and the like is suppressed.
[0010]
Incidentally, in the conventional gas discharge display device having the surface discharge structure, the first flat plate (front plate) which needs to transmit light as much as possible is a transparent electrode whose sustaining electrode is formed of an ITO (indium tin oxide) film or the like. And a bus electrode made of a metal or a thick film conductor to supplement the conductivity. Therefore, in the manufacturing process, (a) SiO 2 for securing the adhesion between the ITO film and the substrate is formed on the glass substrate. 2 A film, (b) an ITO film, (c) a bus electrode, (d) a black stripe, (e) a dielectric layer, and (f) an MgO film were formed in this order. The above-mentioned ITO film is formed by, for example, sputtering or the like, and then patterned by a photo method of performing resist coating, exposure, development, etching, and resist stripping. When the bus electrode is made of a thin film of Cr-Cu-Cr or the like, the bus electrode is made of a thick film conductor by using the same method as that of the ITO film. It is formed by a thick film process such as a method. Further, the dielectric layer and the MgO film are required to have high quality so as to have high translucency. That is, in the conventional three-electrode structure, the manufacturing process of the conductor film, the dielectric film, and the like formed on the inner surface has been complicated due to the requirement for the front plate to have a light-transmitting property. In addition, when forming a bus electrode in the case of a dielectric layer or a thick film conductor in the above-mentioned manufacturing process, a heat treatment is applied to the substrate for baking them. Therefore, the front plate is distorted and the thick film conductor is cracked or deformed due to variations in the amount of thermal expansion based on the temperature distribution in the substrate and differences in the coefficient of thermal expansion between the dielectric and the thick film conductor. There was also a problem that occurs.
[0011]
Preferably, each of the plurality of sustain electrodes includes a protrusion protruding toward an adjacent sustain electrode in each of the light emitting sections. In this way, since the discharge starting voltage is reduced by reducing the distance between the protruding portion and the sustain electrode facing the protruding portion, uniform discharge is performed while keeping the driving voltage at a low value. As a result, it is possible to obtain an image having desired luminance and color tone.
[0012]
Preferably, the plurality of strip-shaped thick film conductors have both ends in the width direction exposed from the thick film dielectric layer. In this way, the sustain electrode can be discharged between the adjacent sustain electrodes on either side, so that the combination of the pair of discharges in the discharge space of the odd-numbered columns counted from the end and the combination of the even-numbered columns are performed. By adopting a 2: 1 interlace (interlaced scanning) for displaying one frame (that is, one image) in two fields by alternately switching between a pair of pairs to be discharged in the discharge space and a conductive film, Without increasing the number of scanning lines, the number of scanning lines can be doubled as compared with the conventional three-electrode structure, and the resolution can be increased.
[0013]
[Second means for solving the problem]
In addition, the gist of the manufacturing method of the second invention for achieving the above object is to form a first flat plate having translucency and a second flat plate parallel to the first flat plate along one direction. A plurality of discharge spaces, and a plurality of discharge spaces formed along the other direction orthogonal to one direction to generate gas discharge in each of the plurality of discharge spaces and covered with a thick dielectric film. And a plurality of write electrodes formed along the one direction for selecting a light emitting section by generating a gas discharge between the sustain electrodes and the plurality of sustain electrodes. A method for producing a gas discharge device of a type in which light generated by gas discharge between electrodes is observed through the first flat plate by sealing the first flat plate and the second flat plate in an airtight manner. , (A) a grid-shaped predetermined thickness dimension And (b) a plurality of strip-shaped thick film conductors parallel to each other and located in one plane, and the plurality of strip-shaped thick film conductors overlap each other. A plurality of thick-film conductor layers that are stacked via the lattice-like dielectric layer at positions and configure each of the plurality of sustain electrodes with each set of a plurality of strip-like thick-film conductors overlapping each other; (C) a sheet member fixing step of fixing a sheet member provided with a thick film dielectric film covering the plurality of band-shaped thick film conductors on one inner surface of the first flat plate and the second flat plate. It is in.
[0014]
[Effect of the second invention]
According to this configuration, when manufacturing the gas discharge display device by overlapping and fixing the first flat plate and the second flat plate, the sheet member in which the plurality of thick film conductor layers are stacked via the lattice-like dielectric layer Is fixed to the first flat plate or the second flat plate, so that a sustain electrode is provided in the discharge space. Therefore, since the sustain electrode composed of a plurality of stacked thick film conductors is covered with the thick dielectric film, the plurality of stacked thick film conductors extends over the entire stacking range. It functions in the same way as one conductor having a thickness dimension, and when a voltage is applied between the sustain electrodes, the charge is applied over the entire area where the band-shaped thick film conductor is laminated on the thick film dielectric film in the thickness direction. Are continuously formed. Therefore, the discharge surfaces are opposed to each other with an area corresponding to the lamination range, so that a three-electrode AC type gas discharge display device having a facing discharge structure can be obtained. Moreover, since the thick film conductor layer for forming the sustain electrode is provided on the sheet member, the sustain electrode can be provided only by disposing the sheet member between the first flat plate and the second flat plate. Therefore, when the sustain electrode is provided on the first flat plate, the distortion of the first flat plate and the sustain electrode due to the heat treatment at the time of formation is preferably suppressed.
[0015]
[Another aspect of the second invention]
Here, preferably, the method for manufacturing a gas discharge display device has a film-forming surface constituted by a high melting point particle layer formed by bonding particles having a melting point higher than a predetermined first temperature with a resin. A support preparing step of preparing a support, and forming a dielectric paste film formed by bonding constituent particles of a thick film dielectric material sintered at the first temperature with a resin on the film forming surface; Forming a dielectric paste film in a lattice pattern corresponding to the body layer; and forming a conductive paste film formed by bonding constituent particles of the thick film conductive material sintered at the first temperature with a resin on the film forming surface. A conductor paste film forming step of forming a plurality of layers in a predetermined pattern corresponding to the thick film conductor layer on the dielectric paste film so as to be laminated thereon, and By heat treatment at temperature Sintering the conductive paste film and the dielectric paste film without sintering the high-melting-point particle layer, and separating the conductive paste film and the dielectric paste film from the conductive paste film and the dielectric paste film. And a firing step of producing the sheet member.
[0016]
With this configuration, the thick-film dielectric material and the thick-film conductor material have a high-melting-point particle layer having a melting point higher than the sintering temperature (first temperature) of the thick-film dielectric material and the thick-film dielectric material. After the paste film of the film conductor material is formed in a predetermined pattern, the thick film dielectric material and the thick film conductor material are subjected to heat treatment at a first temperature at which the thick film conductor material is sintered, so that the thick film dielectric layer is formed. A sheet member on which the thick film conductor layer is laminated is generated through the above. Therefore, since the high-melting particle layer that cannot be sintered at the heat treatment temperature becomes a layer in which only the high-melting particles are lined up by burning out the resin, the generated thick film is not fixed to the support. It can be easily peeled off from the film forming surface. At this time, the paste film of the thick film dielectric material and the thick film conductor material can be formed on the film formation surface in a desired pattern using simple equipment by using an appropriate method according to the material and application. It is possible. In addition, since it is handled in a state of being temporarily fixed by being applied to the film forming surface until it is sintered by the heat treatment, the handling is easy. Therefore, a sheet member for providing the sustain electrode can be easily manufactured and used for manufacturing a gas discharge display device. The dielectric paste film forming step and the conductor paste film forming step are alternately repeated a number of times determined according to the configuration of the sheet member.
[0017]
Preferably, the supporting member preparing step includes forming the high melting point particle layer on a surface of a predetermined substrate. In this case, since the paste film is formed on the substrate, the shape of the support is maintained even after the heat treatment, so that the support is composed of only the high melting point particle layer (for example, ceramics). This has an advantage that the handling of the sheet member for providing the sustain electrode in the discharge space becomes easier as compared with the case where the support is made of a raw sheet. In addition, when such a support is used, the substrate on which the high melting point particle layer is interposed between the substrate and the paste film does not restrain the paste film at the time of heat treatment, and the surface of the paste film Since the roughness reflects only the surface roughness of the high melting point particle layer, the influence on the quality of the sheet member such as the flatness, surface roughness and expansion coefficient of the substrate is reduced, and high quality is required for the substrate. Not done.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a perspective view, partially cut away, showing the configuration of an AC type color PDP (hereinafter, simply referred to as PDP) 10, which is an example of a gas discharge display device of the present invention. In the figure, a PDP 10 includes a front plate 16 and a rear plate 18 which are arranged parallel to each other with a slight space therebetween such that their substantially flat surfaces 12, 14 face each other. The front plate 16 and the rear plate 18 are hermetically sealed at the peripheral edge thereof via a grid-like sheet member 20, thereby forming an airtight space inside the PDP 10. Each of the front plate 16 and the rear plate 18 has a size of, for example, about 900 × 500 (mm) and a uniform thickness of about 1.1 to 3 (mm), and has a light-transmitting property and is softened. It is made of soda lime glass or the like having a similar point of about 700 (° C.). In the present embodiment, the front plate 16 corresponds to a first flat plate, and the back plate 18 corresponds to a second flat plate.
[0020]
On the back plate 18, a plurality of longitudinal partitions 22 extending in one direction and parallel to each other are provided at a constant center interval of about 200 to 500 (μm). The hermetic space between the back plates 18 is divided into a plurality of discharge spaces 24. The partition 22 is made of, for example, PbO-B 2 O 3 -SiO 2 -Al 2 O 3 -ZnO-TiO 2 It is made of a thick film material containing low softening point glass as a main component, such as a system or a combination thereof, and has a width of about 80 to 200 (μm) and a height of about 30 to 100 (μm). It is provided. The fineness, strength, shape retention and the like of the film are adjusted by appropriately adding an inorganic filler such as alumina or other inorganic pigments to the partition walls 22. The sheet member 20 has a positional relationship in which a portion extending along one direction overlaps the top of the partition wall 22.
[0021]
Further, on the back plate 18, an under coat 26 made of low alkali glass or non-alkali glass or the like covering almost the entire inner surface 14 is provided, and a plurality of books made of thick film silver or the like are provided thereon. An embedded electrode 28 is provided at a position between and along the longitudinal direction of the plurality of partition walls 22 so as to be covered with an overcoat 30 made of an inorganic filler such as low softening point glass and white titanium oxide. . The partition wall 22 is provided so as to protrude from the overcoat 30.
[0022]
Further, on the surface of the overcoat 30 and the side surfaces of the partition walls 22, phosphor layers 32 coated separately for each discharge space 24 are provided with a thickness determined for each color within a range of, for example, about 10 to 20 (μm). Have been. The phosphor layer 32 is made of, for example, one of three color phosphors corresponding to emission colors such as R (red), G (green), and B (blue) emitted by ultraviolet excitation. The discharge spaces 24 are provided so as to have mutually different emission colors. The undercoat 26 and the overcoat 30 are provided for the purpose of preventing the reaction between the writing electrode 28 made of thick silver and the back plate 18 and the contamination of the phosphor layer 32. is there.
[0023]
On the other hand, on the inner surface 12 of the front plate 16, a partition 34 is provided in a stripe shape at a position facing the partition 22. The partition wall 34 is made of, for example, the same material as the partition wall 22 and has a thickness of, for example, about 20 to 50 (μm). Between the partitions 34 on the inner surface 12 of the front plate, a phosphor layer 36 is provided in a stripe shape with a thickness of, for example, about 10 to 20 (μm). The phosphor layer 36 has the same luminescent color as the phosphor layer 32 provided on the back plate 18 so that a single luminescent color is obtained for each discharge space 24. The height of the partition 34 is determined so that the surface thereof is higher than the surface of the phosphor layer 36 in order to prevent the sheet member 20 from contacting the phosphor layer 36.
[0024]
FIG. 2 is a diagram illustrating a main part of the configuration of the sheet member 20 with a part thereof cut away. In the figure, a sheet member 20 has an upper dielectric layer 38 and a lower dielectric layer 40 located on the front surface and the rear surface, respectively, and an upper conductor layer 44 and a lower dielectric layer 40 stacked therebetween with an intermediate dielectric layer 42 interposed therebetween. A lower conductor layer 46, a dielectric film 48 provided over the entire laminate, and a protective film 50 further provided over the dielectric film 48 and constituting the surface layer of the sheet member 20. It is configured.
[0025]
The upper dielectric layer 38, the lower dielectric layer 40, and the intermediate dielectric layer 42 (hereinafter, referred to as the dielectric layer 38 and the like when not particularly distinguished) are all about 20 to 50 (μm), for example, 25 μm. (Μm), and their planar shapes are all the same and form a lattice shape. In this embodiment, these dielectric layers 38 and the like correspond to a lattice-shaped dielectric layer. The width of each of the grids extending in the vertical and horizontal directions is, for example, about the same as the width of the partition wall 22 or slightly larger than the width considering the alignment margin, for example, 100 to 150 (μm). It is about. The dielectric layer 38 and the like are made of, for example, PbO-B 2 O 3 -SiO 2 -Al 2 O 3 -ZnO-TiO 2 It is composed of a thick film dielectric material such as a low softening point glass such as a system or a combination thereof and a ceramic filler such as alumina. In the figure, in portions where the upper conductor layer 44 and the lower conductor layer 46 (hereinafter, referred to as conductor layers 44 and 46 unless otherwise specified) are provided, the laminated dielectric layers 38 and the like are integrated. Indicated.
[0026]
The conductor layers 44 and 46 are thick film conductors containing, for example, aluminum (Al), silver (Ag), chromium (Cr), copper (Cu), or the like as a conductive component. (Μm), for example, having a thickness of about 8 (μm). Each of these conductor layers 44 and 46 is composed of a plurality of strip-shaped thick film conductors 52 extending along one direction of the lattice of the dielectric layer 38 or the like. The band-shaped thick film conductor 52 has a width dimension substantially equal to or slightly smaller than the dielectric layer 38 or the like and protrudes on both sides in the width direction, for example, in a direction perpendicular to the longitudinal direction of the partition walls 22, that is, in a writing direction. It extends along a direction perpendicular to the longitudinal direction of the electrode 28. In the longitudinal direction of the partition 22, the strip-shaped thick film conductors 52 are alternately provided with those connected to a common wiring and those connected to independent wirings. Each set of the strip-shaped thick film conductors 52, 52 overlapping with the intermediate dielectric layer 42 interposed therebetween is connected to a common wiring inside the sheet member 20 or outside the hermetic space.
[0027]
As shown at the left end in FIG. 2, each of the plurality of strip-shaped thick film conductors 52 is provided with a plurality of protrusions 54 that protrude alternately in the width direction at a plurality of locations in the longitudinal direction. I have. Since each of the plurality of protrusions 54 is located at a corner of the opening of the lattice, the band-shaped thick film conductor 52 projects at the corner toward the inner peripheral side of the opening. Is a position facing a protruding portion 54 provided on another strip-shaped thick film conductor 52 adjacent to the opening portion. Note that one set of such opposed protrusions 54, 54 exists in one opening. In the openings adjacent to each other in the width direction of the band-shaped thick film conductor 52, projecting portions 54, 54 are provided at corners located on opposite sides in the longitudinal direction of the band-shaped thick film conductor 52. The projecting length of the projecting portion 54 in the width direction of the band-shaped thick film conductor 52 is, for example, in the range of 50 to 200 (μm), for example, about 100 (μm), and the width is, for example, 30 to 150 (μm). ), For example, about 75 (μm).
[0028]
In addition, the dielectric layer 38 and the like are also provided in such a shape that the opening corners of the lattice are enlarged inward at the positions where the above-described projections 54 are provided, and the projections 54 are partially formed on the enlarged portions. , And the rest is located on a component of the lattice perpendicular to the longitudinal direction of the strip-shaped thick film conductor 52. As a result, each of the openings of the lattice has a uniform shape in the thickness direction of the sheet member 20.
[0029]
The dielectric film 48 has a thickness of, for example, about 10 to 30 (μm), for example, about 20 (μm), for example, PbO-B. 2 O 3 -SiO 2 -Al 2 O 3 -ZnO-TiO 2 It is a thick film made of a glass having a low softening point, such as a system or a combination thereof. The dielectric film 48 is provided for causing an AC discharge as described later by storing electric charges on the surface. At the same time, the conductor layers 44 and 46 made of a thick film material must not be exposed. Accordingly, it also has a role of suppressing a change in the atmosphere in the discharge space 24 due to the out gas.
[0030]
The protective film 50 has a thickness of, for example, about 0.5 (μm) and is a thin film or a thick film containing MgO or the like as a main component. The protective film 50 is for preventing the dielectric film 48 from being sputtered by the discharge gas ions. However, since the protective film 50 is made of a dielectric material having a high secondary electron emission coefficient, it functions substantially as a discharge electrode.
[0031]
The PDP 10 having the electrode structure as described above sequentially scans by applying a predetermined AC pulse to one of the strip-shaped thick film conductors 52, which is made independent, and synchronizes with the scanning timing. When a predetermined AC pulse is applied to a desired one of the write electrodes 28 corresponding to the data (ie, a write electrode corresponding to the one selected as a section to emit light), as shown by an arrow A in FIG. A write discharge is generated between them, and charges are accumulated on the protective film 50. At this time, the electric fields formed by the two band-shaped thick film conductors 52, 52 stacked via the intermediate dielectric layer 42, respectively, form one electric field by being superposed on the protective film 50 covering them. Therefore, on the protective film 50, the electric charge is continuously generated in the thickness direction within the range 56 (see FIG. 4) in which the strip-shaped thick film conductors 52 are provided by the discharge between the write electrode 28 and the protective film 50. It will be accumulated. That is, in this embodiment, this range 56 functions as a discharge surface.
[0032]
After scanning all the thick film conductors 52 functioning as the scanning electrodes as described above, a predetermined AC pulse is applied between all the thick film conductors 52, 52. Since the potential due to the accumulated charge is superimposed on the applied voltage and exceeds the discharge starting voltage, a discharge is generated between the discharge surfaces 56 and 56 as shown by another arrow in FIG. It is maintained for a predetermined period of time predetermined by the applied wall charges and the like. As a result, the phosphor layers 32 and 36 in the section selected by the ultraviolet rays generated by the gas discharge are excited to emit light, and the light is emitted through the front plate 16 to display one image. Since the strip-shaped thick film conductor 52 is provided with the protrusion 54, the sustain discharge is first generated between the opposed protrusions 54, 54, and then spread over the entire discharge surface 56. . Then, by changing the data-side electrode (writing electrode 28) to which the AC pulse is applied for each period of the scanning-side electrode, a desired image is continuously displayed. FIG. 3 is a view showing a cross section along the longitudinal direction of the partition wall 22 of the PDP 10, that is, a cross section perpendicular to the longitudinal direction of the strip-shaped thick film conductor 52.
[0033]
At this time, since the thickness dimensions of the strip-shaped thick film conductors 52, 52 facing each other in the discharge space 24 are small, the area of the opposed electrodes is equal to the thickness of the two stacked strip-shaped thick film conductors 52, 52. The total size is, for example, only about 16 (μm). However, according to the present embodiment, since the wide discharge surface 56 is formed based on the continuity of the charge described above, the opposed discharge structure in which such discharge surfaces 56 and 56 are opposed to each other is realized. In other words, in the present embodiment, the laminated strip-shaped thick film conductors 52, 52 integrally constitute a sustain electrode. The interval between the conductor layers 44 and 46 determined by the thickness of the intermediate dielectric layer 42 is, for example, about 25 (μm). Is determined experimentally, for example, according to the area of the discharge surface 56 to be used.
[0034]
The sustain discharge is generated between the band-shaped thick film conductors 52, 52. Since the discharge space 24 is continuous along the longitudinal direction of the partition wall 22, the ultraviolet rays generated by the discharge are strip-shaped in that direction. It extends outside the thick film conductors 52,52. Therefore, the phosphor layers 32 and 36 located outside thereof are also allowed to emit light in the range where the ultraviolet rays reach. The partition of the light emitting unit (cell) in the PDP 10 is divided by the partition wall 22 in a direction perpendicular to the partition wall 22, that is, in the left-right direction in the drawing, and substantially within the range of the ultraviolet rays in the longitudinal direction of the partition wall 22, that is, in the vertical direction in the drawing. Is defined by In this embodiment, the division of the light emitting section in the longitudinal direction of the partition wall 22, that is, the dot pitch is, for example, about 0.9 (mm), and the color cell pitch in the direction perpendicular thereto is, for example, 0.3 (mm). It is about. In the present embodiment, the strip-shaped thick film conductors 52 are provided at a center interval of, for example, about 50 (μm), and a plurality of, for example, three openings are arranged continuously in the longitudinal direction of the discharge space 22. It is provided in one light emitting section. Therefore, it is configured such that discharge is generated at a plurality of locations in one light emitting section, and a plurality of sets of projecting portions 54, 54 facing each other are provided in each light emitting section.
[0035]
In addition, the light generated from the phosphor layer 32 in the discharge space 22 as described above passes through the openings of the sheet member 20 having a lattice shape, as is apparent from the configuration of the PDP 10 shown in FIG. It is emitted from the front panel 12 via Therefore, part of the light generated from the phosphor layer 32 is blocked by the sheet member 20 and cannot contribute to display. At this time, in the present embodiment, as described above, the protrusions 54 protruding into the openings of the lattice are provided alternately at one end and the other end in the width direction in the longitudinal direction of the discharge space 22. In addition, since the visual effect due to the light shielding of the projection 54 is reduced, the deterioration of the display quality due to the existence of the projection 54 is substantially eliminated. The size of the protruding portion 54 for lowering the discharge start voltage is determined so that the discharge start voltage can be reduced as much as possible within a range in which shading due to its existence is allowed.
[0036]
Here, in the present embodiment, each of the plurality of sustain electrodes for generating the sustain discharge in the discharge space 22 is composed of two strip-shaped thick film conductors 52, which are stacked via the intermediate dielectric layer 42. 52, which are covered with the dielectric film 48 and the protective film 50. When a voltage is applied between the strip-shaped thick film conductors 52, 52 adjacent to each other, a sheet is formed on the protective film 50. In the thickness direction of the member 20, charges are continuously formed over the entire area where the strip-shaped thick film conductors 52, 52 are stacked. Therefore, since the discharge surfaces 56 are opposed to each other with an area corresponding to the above-described lamination range, the PDP 10 having the opposed discharge structure is obtained.
[0037]
Further, in this embodiment, the plurality of pairs of strip-shaped thick film conductors 52, 52, that is, each of the plurality of sustaining electrodes, are mutually opposed protrusions 54, 54 protruding toward the adjacent strip-shaped thick film conductor 52. Is provided for each light-emitting section. For this reason, since the discharge starting voltage is reduced by reducing the distance between the protruding portions 54, 54, uniform discharge is possible while keeping the driving voltage at a low value. And the like can be obtained.
[0038]
In the present embodiment, both ends in the width direction of the strip-shaped thick film conductors 52, 52 are exposed from the dielectric layer 38 and the like, and the protrusions 54 are provided on both sides in the width direction. Therefore, the belt-like thick film conductor 52 is configured to be able to discharge between the belt-like thick film conductors 52, 52 adjacent on both sides thereof. It is also possible to increase the resolution by applying a scanning voltage to every other strip-shaped thick film conductor 52 connected to the other, and driving by a 2: 1 interlace that displays one frame in two fields. .
[0039]
Further, according to the present embodiment, the discharge surface 56 is located at an intermediate height between the front plate 16 and the rear plate 18 and the discharge direction is along the inner surfaces 12, 14. Therefore, since the influence of the discharge gas and ions on the inner surface 12 of the front plate and the inner surface 14 of the back plate is small, the phosphor layers 32 and 36 are provided over a wide range on both of them as described above. Therefore, there is an advantage that the luminance can be dramatically increased as compared with the case of the surface discharge structure in which the phosphor layer 32 can be provided only on the substrate opposite to the substrate to which the sustain electrodes are fixed.
[0040]
Further, since the strip-shaped thick film conductor 52 constituting the sustain electrode is not provided on the front plate 16, even when the film is made of thick silver, the yellow discoloration of the silver is not observed. Therefore, there is an advantage that it is not necessary to use an expensive black conductive material such as ruthenium oxide as a constituent material of the sustain electrode 48.
[0041]
By the way, the PDP 10 as described above is manufactured by assembling the sheet member 20, the front plate 16, and the rear plate 18 separately processed (or manufactured) according to, for example, a process diagram shown in FIG.
[0042]
In the process of processing the back plate 18, first, in an under coat forming step 58, the thick film insulator paste is applied to the inner surface 14 of the prepared flat back plate 18 and baked to form the under coat 26. To form Next, in a write electrode forming step 60, the write electrode 28 is formed on the under coat 26 with a thick film conductive material paste such as a thick film silver paste by using, for example, a thick film screen printing method or a lift-off method. . In the subsequent overcoat forming step 62, a thick-film insulating paste containing a low softening point glass and an inorganic filler is repeatedly applied over the entire surface of the undercoat 26 from above the writing electrode 28 and baked. An overcoat 30 is formed.
[0043]
Next, in the partition wall forming step 64, for example, a thick film insulating paste mainly containing low softening point glass and inorganic filler is applied, dried, and then subjected to a baking treatment at a temperature of, for example, about 500 to 650 (° C.). Thereby, the partition wall 22 is formed. If the desired height of the partition wall 22 cannot be ensured by one printing, printing and drying are repeated as many times as necessary. The same applies to the undercoat forming step 58 to the overcoat forming step 62 described above. Then, in the phosphor layer forming step 66, three kinds of phosphor pastes corresponding to three colors of RGB are applied to predetermined positions defined for each color between the partition walls 22 by a thick film screen printing method or by pouring. Then, the phosphor layer 32 is provided by performing a baking treatment at a temperature of, for example, about 450 (° C.).
[0044]
On the other hand, in the processing step of the front plate 16, first, in the partition wall forming step 68, similarly to the above step 64, for example, a thick film insulating paste mainly containing low softening point glass and inorganic filler is printed by thick film screen printing. The coating is repeatedly applied on the inner surface 12 by using a thick film forming technique such as a method, dried, and further baked at a heat treatment temperature in the range of, for example, about 500 to 650 (° C.) determined according to the type of the thick film insulating paste. Thereby, the partition wall 34 is formed. Next, in the phosphor layer forming step 70, three kinds of phosphor pastes corresponding to the three colors of RGB are thick-film-screen-printed or dropped-printed from the top of the partition 34 at predetermined positions between the partitions 34 and defined for each color. The phosphor layer 36 is provided by applying such a method and baking at a temperature of, for example, about 450 (° C.).
[0045]
Then, the front plate 16 and the back plate 18 are overlapped with each other via the above-described sheet member 20 produced in the sheet member producing step 72, and a heat treatment is performed in the sealing step 74, so that an interface between them is formed. These are hermetically sealed with a sealing agent such as a seal glass applied in advance. Prior to the sealing, the sheet member 20 is fixed to one of the front plate 16 and the back plate 18 using a glass frit or the like, if necessary. Then, in the exhaust / gas sealing step 72, the PDP 10 is obtained by evacuating the formed airtight container and sealing a predetermined discharge gas.
[0046]
In the above manufacturing process, the sheet member manufacturing process 72 is performed according to, for example, a process shown in FIG. 6 to which a well-known thick film printing technique is applied. Hereinafter, a method for manufacturing the sheet member 20 will be described with reference to FIGS. 7A to 7E and FIGS.
[0047]
First, in step 78 for preparing a substrate, a substrate 80 (see FIG. 7) on which thick film printing is to be performed is prepared, and an appropriate cleaning process is performed on the surface 78 and the like. The substrate 80 is hardly deformed or deteriorated during a heat treatment described later, and has a thermal expansion coefficient of 87 × 10 -7 (/ ° C.), a glass substrate made of soda lime glass or the like having a softening point of about 740 (° C.) and a strain point of about 510 (° C.) is preferably used. The thickness of the substrate 80 is, for example, in the range of about 2 to 3 (mm), for example, about 2.8 (mm), and the size of the surface 82 is made sufficiently larger than the sheet member 20. ing.
[0048]
Next, in a release layer forming step 84, the release layer 86 having the high melting point particles bonded with the resin is applied to the surface 82 of the substrate 80, for example, in a range of about 5 to 50 (μm), preferably 10 to 20 (μm). ). The high melting point particles have a high softening point glass frit having an average particle size of about 0.5 to 3 (μm) and an average particle size of about 0.01 to 5 (μm), for example, 1 (μm). About 30 to 50% of a ceramic filler such as alumina or zirconia. The above-mentioned glass having a high softening point has a softening point of, for example, about 550 (° C.) or more, and the softening point of the high melting point particles as a mixture is, for example, about 550 (° C.) or more. The resin is, for example, an ethylcellulose-based resin which is burned off at about 350 (° C.). As the release layer 86, for example, as shown in FIG. 7A, an inorganic material paste 88 in which the high melting point particles and the resin are dispersed in an organic solvent such as butyl carbitol acetate (BCA) or terpineol is used. It is provided by applying the liquid on substantially the entire surface of the substrate 80 by using a screen printing method and drying it at a drying furnace or at room temperature, but it can also be provided by applying a coater or a film laminate. As the drying furnace, a far-infrared drying furnace capable of sufficiently supplying and exhausting air is preferably used so that the surface roughness of the film is excellent and the resin is uniformly dispersed. FIG. 7B shows a stage in which the release layer 86 is formed in this manner. In FIG. 7A, 90 is a screen, and 92 is a squeegee. In this embodiment, the substrate 80 provided with the release layer 86 corresponds to a support, and the surface of the release layer 86 corresponds to a film forming surface. Corresponds to the body preparation process.
[0049]
In a subsequent thick film paste layer forming step 94, a thick film dielectric paste 96 for forming the dielectric layer 38 and the like and a thick film conductor paste 98 for forming the conductor layers 44 and 46 (see FIG. ) Is sequentially applied and dried in a predetermined pattern on the release layer 86 by using a screen printing method or the like in the same manner as the inorganic material paste 88. As a result, the dielectric printed layers 100, 104, and 108 for forming the dielectric layer 38 and the like, and the conductive printed layers 102 and 106 for forming the conductive layers 44 and 46 are formed in the stacking order. The thick film dielectric paste 96 is obtained by dispersing a dielectric material powder such as alumina or zirconia, a glass frit, and a resin in an organic solvent. The thick-film conductor paste 98 is, for example, a conductor material powder such as silver powder, glass frit, and resin dispersed in an organic solvent. The above glass frit is made of, for example, PbO-B 2 O 3 -SiO 2 -Al 2 O 3 -TiO 2 A low softening point glass or the like is used, and the same resin and solvent as the inorganic material paste 88 are used, for example. FIGS. 7C to 7E show the stages in which the dielectric print layer 100, the conductor print layer 102, and the dielectric print layers 104 to 108 are formed, respectively. If a predetermined thickness cannot be obtained by one printing, printing and drying are repeated as many times as necessary.
[0050]
After forming the thick print layers 100 to 108 as described above and drying to remove the solvent, in the firing step 110, the substrate 80 is placed in the furnace chamber 112 of a predetermined firing apparatus, and the thick film dielectric The heat treatment is performed at a firing temperature of, for example, about 550 (° C.) according to the type of the paste 96 and the thick film conductor paste 98. FIG. 8F shows a state during the heat treatment.
[0051]
In the above heat treatment process, since the sintering temperature of the thick-film printing layers 100 to 108 is, for example, about 550 (° C.), the resin components are burned off and the dielectric material, the conductor material, and the glass frit are removed. The sintering produces the dielectric layer 38 and the like and the conductor layers 44 and 46, that is, the basic parts of the sheet member 20. FIG. 8G shows this state. At this time, since the inorganic component particles of the release layer 86 have a softening point of 550 (° C.) or more as described above, the resin component is burned off, but the high melting point particles (glass powder and ceramic) are used.・ Filler) cannot be sintered. Therefore, when the resin component is burned off as the heat treatment proceeds, the release layer 86 becomes a particle layer 116 composed of only the high-melting particles 114 (see FIG. 9).
[0052]
FIG. 9 is an enlarged view of a part of the right end of FIG. 8 (g), schematically showing the progress of sintering in the above heat treatment. The particle layer 116 formed by burning out the resin component of the peeling layer 86 is a layer in which the high-melting particles 114 are merely stacked, and the high-melting particles 114 are not restricted to each other. Therefore, when the thick-film printing layers 100 to 108 contract from the end positions before firing indicated by the one-dot chain line in the figure, the high melting point particles 114 act like a roller. As a result, a force that prevents the contraction of the thick print layers 100 to 108 on the lower surface side of the thick film print layers 100 to 108 does not act on the lower surface side of the thick print layers 100 to 108. No warpage or the like has occurred.
[0053]
In the present embodiment, the thermal expansion coefficient of the substrate 80 is substantially the same as that of the dielectric material, and until the sintering of the thick print layers 100 to 108 starts, that is, the resin component is burned off but the glass component is burned. There is almost no difference in the amount of thermal expansion between the frit, the dielectric material powder, and the conductor powder in a temperature range in which the bonding force is still small. On the other hand, when the sintering of the thick film printing layers 100 to 108 starts, the substrate 80 does not hinder the firing shrinkage by the action of the particle layer 116 as described above. Thus, thermal expansion of the substrate 80 does not substantially affect the quality of the thick film produced. When the substrate 80 is used repeatedly or when the heat treatment temperature is increased, a heat-resistant glass having a higher strain point (for example, having a coefficient of thermal expansion of 32 × 10 -7 (/ ° C.) and a borosilicate glass having a softening point of about 820 (° C.) or a thermal expansion coefficient of 5 × 10 -7 (/ ° C.) and a softening point of about 1580 (° C.) quartz glass or the like) can be used. Also in this case, in a temperature range where the bonding force of the dielectric material powder or the like is small, the amount of thermal expansion of the substrate 80 is extremely small, so that the thermal expansion does not affect the quality of the generated thick film.
[0054]
Returning to FIG. 6, in the peeling step 118, the generated thick film, that is, the laminated body of the dielectric layers 38, 40, 42 and the conductor layers 44, 46 is peeled from the substrate 80. Since the high melting point particles 114 are merely stacked in the particle layer 116 interposed therebetween, the above-described peeling treatment can be easily performed without using any chemicals or equipment. At this time, the high melting point particles 114 can adhere to the back surface of the laminate with a thickness of about one layer, and the adhered particles are removed using an adhesive tape or an air blow as necessary. Note that the substrate 80 from which the thick film has been peeled is unlikely to be deformed or deteriorated at the above-mentioned firing temperature as described above, and thus is repeatedly used for the same purpose.
[0055]
Next, in a dielectric paste application step 120, the peeled laminate is dipped in a dielectric paste 124 stored in a dipping tank 122, so that the dielectric paste 124 is applied to the entire outer peripheral surface. This dielectric paste 124 is made of, for example, PbO-B 2 O 3 -SiO 2 -Al 2 O 3 -ZnO-TiO 2 A glass powder such as a system or a combination thereof, and a resin such as PVA are dispersed in a solvent such as water, and are prepared to have a lower viscosity than the thick film dielectric paste 96 described above. . In addition, the above-mentioned glass powder having a softening point not containing lead of about 630 (° C.) or more can be used. This is about the same as or higher than the softening point of the substance contained in the thick film dielectric paste 96. In addition, the use of the paste prepared to have a low viscosity is to prevent bubbles from being caught and spread during application, and to prevent defects from remaining after firing. Is gently submerged in the dielectric paste 124 while being placed on the substrate and is taken out.
[0056]
In the subsequent sintering step 128, the laminate taken out of the dipping tank 122 and sufficiently dried is put into a sintering furnace, for example, 550 to 580 determined according to the type of glass powder contained in the dielectric paste 124. Heat treatment (firing) is performed at a predetermined temperature of about (° C.). The firing temperature is set to a temperature sufficiently higher than the softening point of the glass powder, for example, so that the glass powder is sufficiently softened to obtain a dense dielectric layer (dielectric film 48). For this reason, the dielectric film 48 thus formed has almost no void due to the grain boundary between the glass powders, and has a high withstand voltage. Since the conductor layers 44 and 46 are thin films each having a thickness of about 5 to 20 (μm) as described above, the widths thereof are substantially uniform, and the conductor layers 44 and 46 are formed on the side surfaces of the laminate. There is no rattling of the thick film pattern at the width direction ends of 44 and 46, and the entire side surface of the laminate is smooth. Therefore, the dielectric film 48 formed thereon has a smooth surface with few irregularities, so that the variation in the firing voltage is suppressed and the withstand voltage is further increased. In the present embodiment, the coating step includes the dielectric paste application step 120 and the baking step 128.
[0057]
Then, in the protective film forming step 130, the protective film 50 is formed in a desired thickness dimension on the surface of the dielectric film 48 by, for example, dipping and baking, or by a thin film process such as an electron beam method or sputtering. The sheet member 20 is obtained by being provided on substantially the entire surface. Since the protective film 50 is a thin film as described above, it is relatively difficult to form a uniform film by a thick film process such as dipping. However, in this embodiment, since the opposed discharge is performed between the discharge surfaces 56, 56 covered with the dielectric coating 48 formed with a substantially uniform film thickness, the discharge is performed regardless of the surface shape of the protective film 50. Concentration is unlikely to occur. Therefore, the protective film 50 is not required to be as uniform as when a surface discharge structure is employed. Further, since the protective film 50 does not exist on the light emission path, its transparency is not required.
[0058]
Here, in this embodiment, when the PDP 10 is manufactured by overlapping and fixing the front plate 16 and the back plate 18, the sheet member 20 including the conductor layers 44 and 46 manufactured as described above is used. By being fixed to the front plate 16 or the rear plate 18, a strip-shaped thick film conductor 52 functioning as a sustain electrode is provided in the discharge space 24. Therefore, since the conductor layer for forming the sustain electrode is provided on the sheet member 20, the sustain electrode can be provided only by disposing the sheet member 20 between the front plate 16 and the back plate 18. Therefore, it is possible to manufacture PDP 10 in which the distortion of front plate 16 and the sustain electrodes due to the heat treatment during the formation of the sustain electrodes on front plate 16 is suitably suppressed. Therefore, the AC-type PDP 10 having a three-electrode structure in which the distortion and the like caused by the heat treatment accompanying the formation of the electrodes and the like can be obtained by a simple manufacturing process. That is, SiO 2 A complicated process of providing a coat, ITO, a bus electrode, and the like becomes unnecessary.
[0059]
Further, in this embodiment, the printed layers 100 to 108 are formed in a predetermined pattern on the film forming surface composed of the release layer 86 having a melting point higher than the sintering temperature of the thick film conductor paste 98 and the thick film dielectric paste 96. After being formed, the sheet member 20 in which the conductor layers 44 and 46 are laminated via the intermediate dielectric layer 42 is generated by performing a heat treatment at a temperature at which they are sintered. Therefore, the release layer 86 that is not sintered at the heat treatment temperature becomes the particle layer 116 in which only the high-melting particles 114 are arranged by burning out the resin, so that the generated thick film is not fixed to the substrate 80. , Can be easily separated from the surface 82 thereof. Therefore, the sheet member 20 for forming the sustain electrode can be easily manufactured and used for manufacturing the PDP 10.
[0060]
As described above, the present invention has been described in detail with reference to the drawings. However, the present invention can be implemented in other embodiments.
[0061]
For example, in the embodiment, the case where the present invention is applied to the AC-type PDP 10 for color display and the manufacturing method thereof has been described. However, the present invention is similarly applied to the AC-type PDP for monochrome display and the manufacturing method thereof. Applied.
[0062]
Further, the PDP 10 of the embodiment is of a type having three color phosphor layers 32 and 36 to perform full color display. However, the present invention relates to a PDP having one or two color phosphor layers. Applies similarly.
[0063]
Further, in the embodiment, the strip-shaped thick film conductor 52 is configured to be discharged between the strip-shaped thick film conductors 52 adjacent on both sides in the width direction, but only the one adjacent to one is discharged. Such a configuration is acceptable.
[0064]
Further, in the embodiment, the two conductor layers 44 and 46 are provided via the intermediate dielectric layer 42. However, the number of conductor layers for forming the sustain electrode is determined by the desired discharge surface 56. Is appropriately determined within the range of two or more layers according to the area of the conductive layer, and three or more conductor layers may be laminated with two or more intermediate dielectric layers interposed therebetween.
[0065]
Further, in the embodiment, the protruding portion 54 for facilitating the start of discharge is provided on the strip-shaped thick film conductor 52. However, the discharge start voltage can be made sufficiently low or its variation can be made sufficiently small. In this case, the protrusion 54 need not be provided.
[0066]
Further, in the embodiment, the band-shaped thick film conductor 52 constituting the sustain electrode is provided in the sheet member 20, but a parallel electrode pair extending along a direction orthogonal to the longitudinal direction of the discharge space 24 can be provided. If it is, the arrangement form does not matter. For example, a partition extending in a direction perpendicular to the partition 22 may be protruded from the inner surface of the front plate 16, and the band-shaped thick film conductors 52, 52 may be laminated on the dielectric via a dielectric layer.
[0067]
Further, in the embodiment, the partition walls 22 are provided in a stripe shape. However, if there is no problem in the sealing of the exhaust gas after the sealing, the discharge space may be defined by grid-shaped partition walls. In this case, the conductor layers 44 and 46 can be provided on the grid-like partition walls. Further, in the embodiment, the partition walls 22 and 34 are formed on both the front plate 16 and the rear plate 18, but they may be provided on only one of them. In that case, in order to avoid the contact between the sheet member 20 and the phosphor, it is preferable that the phosphor layer is not provided on the side where the partition is not provided.
[0068]
In addition, the thickness dimension, mutual interval, and the like of the conductor layers 44 and 46 are appropriately determined according to desired electrical characteristics, mechanical strength, and the like, and are not limited to those described in the embodiments.
[0069]
Further, in the embodiment, the entire surface of the sheet member 20 is covered with the dielectric film 48, but it is sufficient that at least the conductor layers 44 and 46 are covered. It does not matter if the film 48 is not provided.
[0070]
Further, in the embodiment, the sheet member 20 is manufactured by providing the dielectric layer 38 and the like by using the thick film screen printing method. May be provided with a thick paste layer and patterned using a photo process.
[0071]
In the embodiment, the phosphor layers 32 and 36 are provided on both of the inner surfaces 12 and 14. However, only one of them can be provided.
[0072]
Although not specifically exemplified, the present invention can be variously modified without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a color PDP, which is an example of an AC-type gas discharge display device having a three-electrode structure according to the present invention, with a part cut away.
FIG. 2 is a diagram illustrating a configuration of a sheet member provided in the PDP of FIG.
FIG. 3 is a diagram illustrating a cross-sectional structure of the PDP of FIG. 1 in a cross section along a longitudinal direction of a partition.
FIG. 4 is an enlarged view of a part of FIG. 3;
FIG. 5 is a process chart illustrating a method for manufacturing the PDP of FIG.
FIG. 6 is a process diagram illustrating a method for manufacturing a sheet member.
FIGS. 7A to 7E are views showing the state of a substrate and a thick film in a main part stage of the manufacturing process of FIG. 6;
8 (f) to 8 (h) are diagrams subsequent to FIG. 7 (e) for showing the state of the substrate and the thick film at the main part stage of the manufacturing process of FIG. 6;
FIG. 9 is a view for explaining a shrinkage behavior in the firing step of FIG. 6;
[Explanation of symbols]
10: PDP
16: Front panel
18: Back plate
20: Sheet member
24: discharge space
38: upper dielectric layer, 40: lower dielectric layer, 42: intermediate dielectric layer
44: upper wiring layer, 46: lower wiring layer
52: Strip thick film conductor
54: Projection
56: Discharge surface

Claims (4)

  1. A plurality of discharge spaces formed along one direction between a first flat plate having a light transmitting property and a second flat plate parallel to the first flat plate, and gas discharge is generated in each of the plurality of discharge spaces. A plurality of sustaining electrodes formed along the other direction perpendicular to the one direction and covered with the thick dielectric film, and a gas discharge is generated between the sustaining electrodes to form a light emitting section. A plurality of write electrodes formed along the one direction for selection, and a gas discharge device of a type in which light generated by gas discharge between the plurality of sustain electrodes is observed through the first flat plate. And
    A gas discharge display device, wherein each of the plurality of sustain electrodes is composed of a plurality of strip-shaped thick film conductors laminated via a thick film dielectric layer.
  2. The thick film dielectric layer is a lattice-like dielectric layer interconnected at a plurality of locations in the longitudinal direction between the plurality of storage electrodes,
    A sheet comprising the plurality of strip-shaped thick film conductors laminated on the lattice-shaped dielectric layer covered with the thick film dielectric film and arranged between the first flat plate and the second flat plate in parallel with the first flat plate and the second flat plate 2. The gas discharge display device according to claim 1, including a member.
  3. 2. The gas discharge display device according to claim 1, wherein each of the plurality of sustain electrodes includes a protrusion protruding toward an adjacent sustain electrode in each of the light emitting sections. 3.
  4. A plurality of discharge spaces formed along one direction between a first flat plate having a light transmitting property and a second flat plate parallel to the first flat plate, and gas discharge is generated in each of the plurality of discharge spaces. A plurality of sustaining electrodes formed along the other direction perpendicular to the one direction and covered with the thick dielectric film, and a gas discharge is generated between the sustaining electrodes to form a light emitting section. A plurality of write electrodes formed along the one direction for selection, and a gas discharge device of a type in which light generated by gas discharge between the plurality of sustain electrodes is observed through the first flat plate. Is produced by superposing the first flat plate and the second flat plate and sealing them tightly,
    A grid-like dielectric layer made of a thick film dielectric having a grid-like predetermined thickness dimension;
    It comprises a plurality of parallel strip-shaped thick film conductors located in one plane, and the plurality of strip-shaped thick film conductors are laminated via the lattice-like dielectric layer at relative positions where they overlap with each other, and are mutually connected. A plurality of thick film conductor layers for configuring each of the plurality of sustain electrodes with each set of a plurality of overlapping strip-shaped thick film conductors,
    A sheet member fixing step of fixing a sheet member provided with a thick film dielectric film covering the plurality of band-shaped thick film conductors on one inner surface of the first flat plate and the second flat plate. Of manufacturing a gas discharge display device.
JP2003022862A 2003-01-30 2003-01-30 Gas discharge display device and method of manufacturing device Pending JP2004235042A (en)

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